Not at all what you're asking for but I can help speed up your workflow a bit.
In the Piano Roll shortcuts menu, create these shortcuts
T = Edit/Tools/Transpose
S = Edit/Select Mode/Edit - Set edit mode off
W = Edit/Select Mode/Edit - Set edit mode on
A = Edit/Select/All
Now, when you enter a clip via a double-click you can quickly select all notes (A) or enter what I deem as "Select Mode" (S). If S was used to enter Select mode, use the rodent to quickly select around the group of notes of interest. With notes of interest selected, whack T for the Transpose dialog.
As you've identified, using a spinner box with the mouse is going to be very inefficient for this task. Instead, just enter 12 (or -12) as a value and hit OK
It also looks like there's some preset saving capability which may already provide you with what you want. I don't use them (maybe I'm missing out) so I wouldn't know if saved presets are stored locally to the session or globally (which would make them available for any session). I'm sure someone knows...
Anyway, I use these (and more) shortcuts all the time in order to get things done very quickly. The trick is to make use of them for the most common operations... the "bread and butter" stuff you find yourself doing all the time. From what you described above, this is a perfect scenario.
By the way, the reason we mapped W is to provide a means to get back to what I call "Write Mode".
Not at all what you're asking for but I can help speed up your workflow a bit.
In the Piano Roll shortcuts menu, create these shortcuts
Now, when you enter a clip via a double-click you can quickly select all notes (A) or enter what I deem as "Select Mode" (S). If S was used to enter Select mode, use the rodent to quickly select around the group of notes of interest. With notes of interest selected, whack T for the Transpose dialog.
As you've identified, using a spinner box with the mouse is going to be very inefficient for this task. Instead, just enter 12 (or -12) as a value and hit OK
It also looks like there's some preset saving capability which may already provide you with what you want. I don't use them (maybe I'm missing out) so I wouldn't know if saved presets are stored locally to the session or globally (which would make them available for any session). I'm sure someone knows...
Anyway, I use these (and more) shortcuts all the time in order to get things done very quickly. The trick is to make use of them for the most common operations... the "bread and butter" stuff you find yourself doing all the time. From what you described above, this is a perfect scenario.
By the way, the reason we mapped W is to provide a means to get back to what I call "Write Mode".